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Home  »  case studies • Oil and Gas   »   Preservation of J-Tubes on Offshore Jackets
June 10, 2020

Preservation of J-Tubes on Offshore Jackets

Challenge
The client needed to preserve piping internals for JTubes on their jackets (support frames for offshore platforms) built for installation in an offshore field development project. The jackets were fabricated onshore and sailed offshore for the final fit-up, requiring a preservation period of up to three years.

Application
Cortec® VpCI® Technology was selected for its superior preservation abilities within closed and sealed environments such as J-Tubes, which are used for carrying subsea cables to topside structures. VpCI®-649 BD was identified in particular for the protection of the J-Tube internals. Upon completion of the float-over jacket to which the 400 mm (15.7 in.) diameter, 30 m (32.8 yds.) long J-Tubes would be attached, and after subsequent offshore installation and placing of the 30,000 MT topsides, the tubes would remain sealed and preserved until the subsea cables were ready for installation.

Conclusion
Cortec® VpCI® has a long track record with the national oil companies in the UAE. Cortec® Middle East and Kanoo were happy to support them in achieving effective preservation in the harsh climatic conditions found in the Arabian Peninsula.

Location: Abu Dhabi, UAE

Date: 2017

Product
VpCI®-649 BD

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